Server Connection and Browsing

Connect to OPC servers and browse their name spaces

Functions

Server Discovery

`opcregister`	Install and register OPC Foundation Core Components
`opcserverinfo`	Version, server, and status information
`opchdaserverinfo`	Query host for installed HDA servers
`opcuaserverinfo (opcua)`	Query host for installed OPC UA servers
`opc.hdaSupport`	OPC Toolbox HDA troubleshooting utility
`opc.daSupport`	OPC Toolbox data access troubleshooting utility
`opcsupport`	OPC Toolbox troubleshooting utility
`opcDataAccessExplorer`	Open OPC Data Access Explorer app
`openosf`	Open OPC Data Access Explorer session file

Server Access

`opcfind`	Find OPC Toolbox objects with specific properties
`opcda`	Create OPC data access object
`opchda`	Create OPC historical data access client
`opcua (opcua)`	Create OPC UA client object
`opcuanode (opcua)`	Create OPC UA node objects
`connect`	Connect OPC Toolbox client to server
`isConnected`	True if HDA Client is connected to server
`disconnect`	Disconnect OPC Toolbox client from server
`propinfo`	Property information for OPC Toolbox objects
`obj2mfile`	Convert OPC Toolbox object to MATLAB code
`opcreset`	Disconnect and delete all OPC Toolbox objects
`opc.hda.reset`	Disconnect and delete all OPC HDA client objects

Server Browsing

`getnamespace (opcda)`	OPC DA server name space
`getNameSpace (opchda)`	OPC HDA server name space
`getNamespace (opcua)`	Namespace of OPC UA server associated with client
`browsenamespace (opcda)`	Graphically browse OPC DA server name space
`browseNameSpace (opchda)`	Graphically browse OPC HDA server name space
`browseNamespace (opcua)`	Graphically browse name space and select nodes from OPC UA server
`flatnamespace`	Flatten hierarchical OPC name space
`serveritems`	Query server or name space for fully qualified item IDs

Server Information

`opcserverinfo`	Version, server, and status information
`opchdaserverinfo`	Query host for installed HDA servers
`opcuaserverinfo (opcua)`	Query host for installed OPC UA servers
`findDescription`	Locate OPC HDA servers with particular description

Server Items

`readItemAttributes`	Read item attribute values from OPC HDA server
`serveritemprops`	Property information for items in OPC server name space
`getDescription`	Get description of OPC HDA aggregate type or item attribute
`getIDFromName`	Translate OPC HDA aggregate type or item attribute name to numeric identifier
`getIDList`	Get all aggregate type or item attribute IDs
`getNameList`	Get all aggregate type or item attribute names

Server Objects

`copyobj`	Make copy of OPC data access object
`delete`	Remove OPC Toolbox objects from memory
`isvalid`	True for undeleted OPC Toolbox objects
`save`	Save OPC Toolbox objects to MAT-file
`load`	Load OPC Toolbox objects from MAT-file
`disp`	Summary of information for OPC Toolbox objects
`get`	OPC Toolbox object properties
`set`	Configure or display OPC Toolbox object properties
`opchelp`	Help for OPC Toolbox data access function or property

Apps

OPC Data Access Explorer

Explore and exchange data with OPC Data Access servers

Properties

expand all

Servers and Groups

`Group`	Data Access Group objects contained by client
`Name`	Descriptive name for OPC Toolbox object
`Tag`	Label to associate with OPC Toolbox object
`Type`	OPC Toolbox object type
`UserData`	Data to associate with OPC Toolbox object

Client Properties

`Host`	DNS name or IP address of server
`ServerID`	Server identity
`Status`	Status of connection to OPC server
`Timeout`	Maximum time to wait for completion of instruction to server

Topics

OPC Data Access (DA)

Discover Available Data Access Servers

Describes how to browse your network for OPC servers and how to browse an OPC server to find server item names.

Connect to OPC Data Access Servers

Describes how to create OPC Toolbox™ Data Access client objects and connect to OPC servers.

Access Data with OPC Data Access Explorer

Presents a step-by-step approach to using the toolbox to interact with OPC DA servers from MATLAB^® software.

OPC DA Server Item Properties

DA server properties defined by the OPC Foundation.

OPC Historical Data Access (HDA)

Discover Available HDA Servers

Describes how to browse your network for OPC HDA servers, and how to browse an OPC server to find server item names.

OPC Toolbox HDA Objects

OPC Toolbox uses MATLAB objects to implement OPC HDA client functionality.

Create an OPC HDA Client Object

After determining the host name and server ID of the OPC server you want to connect to, you can create an OPC HDA client object.

Connect to the OPC HDA Server

OPC HDA client objects are not automatically connected to the server when they are created.

Set Client Properties

You can modify many properties specific to the created client.

Read Item Attributes

Each item that you find on a server might have a given set of item attributes associated with it.

OPC Unified Architecture (UA)

OPC UA Components

Description of OPC UA components and their interactions.

Featured Examples

Install a Simulation Server for OPC Toolbox Examples

Install a simulated OPC Server for use with the OPC Toolbox examples.

Open Script

Locate and Browse OPC Data Access Servers

Use OPC Toolbox™ to browse the network for OPC servers, and query the server name space for server items and their properties.

Open Script

Locate and Browse OPC Historical Data Access Servers

Use the OPC Toolbox™ to browse the network for OPC Historical Data Access servers, and use OPC Toolbox functions to query the server name space for server items and their properties.

Open Script

Browse OPC UA Server Namespace

Find OPC Unified Architecture (UA) servers, connect to them, and browse their namespace to find nodes of interest. To run this example in your MATLAB session, you will need to install and start the Prosys OPC UA Simulation Server. Read the Getting Started section of the OPC Toolbox documentation for further information.

Open Script

OPC Toolbox Documentation

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